Sandpapering-machine.



0. C. WYSONG. SANDPAPBRING MAGHINB.

APPLIOATIOK mum JULY 12, 1909.

Patented June 27, 1911.

3 SHEETS-SHEET 1.

0. 0. WYSONG. SANDPAPBBING MACHINE.

amnntor.

"I! nouns FITIRS 170., Wasnmurou, o. c

0. U. WYSONG.

SANDPAPERING MACHINE.

APPLIOATIOH FILED JULY 1a, 1909.

Patented June 27, 1911.

3 SHEETSBHEET 3.

Elmnrlkoa UNITED STATES PATENT OFFICE.

OLMEDO COR'I'EZ WYSONG, 0F GREENSBORO, NORTH CAROLINA.

SANDPAPERING-MACHINE.

To all whom it may concern:

Be it known that I, OLMEDO CoR'rEz VVY- SONG, a citizen of the UnitedStates, residing at Greensboro, in the county of Guilford and State ofNorth Carolina, have invented certain new and useful Improvements inSandpapering-Machines, of which the following is a specification.

My invention relates to improvements in abrasive apparatus primarily forpolishing straight work, and secondarily in provision for use of art ofthe mechanism for polishing irregu ar curved or straight work.

One of its objects is to provide mechanism employing sand or abraslvebelts to expeditiously polish large as well as small pieces of straightwork, including the class of straight work heretofore treated on sanddrums, such as doors, boards, window and door frames.

Another object is to provide mechanism whereby the abrasive beltssuccessively act upon the Work first at substantially right angles tothe grain of the work, and then substantially in line with the grain ofthe work.

Another object is to provide a single belt adapted to simultaneously actupon opposite sides of the work as it is fed forward, and substantiallyin line with the grain of the work.

Another object is to provide improved means for guiding and holding thebelts in contact with the work, and provision for feeding the workcontinuousl forward between the active sections of be t.

Another object is to make provision whereby the separate belts may beindependently used when desired to polish ir- I'EglEaI', curved or smallpieces of straight wor It further consists in certain details of form,combination and arrangement, all of which will be more fully set forthin the description of the accompanying drawings in which:

Figure 1 is a top plan view of my improved mechanism. Fig. 2 representsin side elevation a modification of the forward belts. Fig. 3 is asection on line a 2 of Fig. 1. Fig. 4 is a detail sectional view on lineo v of Fig. 5. Fig. 5 is a front elevation of the mechanism of Figs. 1and 3. Fig. 6 is a top plan view of a modification of the rear belt.Fig. 7 is a central vertical section illustrating a modification adaptedto treat one side of the work at a time.

Specification of Letters Patent.

Application filed July 12, 1909.

Patented June 27, 1911. Serial No. 507,197.

In the accompanying drawings A represents the base or frame on which theoperative parts are mounted.

A represents a gib or way on which are mounted the standards B B, whichare adjustable along said way by means of a screw 6, to which thestandards may be connected at will by means of a s lit nut or clutch boperated to open and c ose upon the screw by means of wedges b actuatedby eccentrics b on the shaft 5. Thus the standards B B may be fed to orfrom each other, or jointly to any position along the gib A. Swingingframes D D are pivotally supported upon the standards B B by means ofhollow sleeves cl, which serve as journal box for the shafts d of thebelt driving pulleys d. The frames D D also carry adjustable idlerulleys (i which serve to tension the abrasive belts d d and to make saidbelts track as desired over their pulleys, for which purpose said idlerpulleys are mounted in yokes (Z the stems a of which are adjustable bothendwise, and about their axes in sleeves d, which sleeves are splined insockets in the frames D D and provided with rack teeth engaged bypinions (Z by means of which said sleeves are quickly adjustableendwise. Set bolts d al serve to lock the sleeves d and stems d to theiradjusted positions.

E represents a support for the rear face of the working portion of theabrasive belt at. The support E is preferably provided with stud bolts eat its four corners by means of which the support can be adjustedrelative to its supporting plate 6, the bolt 6 serving to hold thesupport away from plate e near its center, thus permitting the sup portE to be ad usted by the bolts (2 and nuts thereon into any osit-ionrequired to aline the belt d. The p ate 2' is detachably supported upona stud 6 carried by the frame D.

6 represents a table to support the work, which 1s detachably supportedupon a stud 6 carried by the frame D. The frame D is adapted to swingupon its pivotal support (I to any desired an le of adjustment, and tobe locked in such ad usted position by means of a latch e enteringnotches in the flange c of frame D. The frame D is angularly adjustablein the same manner as the frame I), and has a work table Its abrasivebelt support E is supported upon a plate 0 and adjustable relativethereto in the same manner as the support E relative to plate 0.

The plate a is supported relative to frame D by means of parallel linksF F, which permits the plate a to be adjusted to and from the plate 6while preserving the alinement of its support E. This adjustment iseifected by means of a foot-lever pivoted at f to frame 1) and providedwith a crank arm 7' and a link f to connect the crank arm with the plates, so that pressure on the foot lever will advance the support E towardthe support E. Thus the two belts (Z cl are adapted to be alined and employed conjointly to surface opposite sides of a single piece of work,as indicated in Figs. 1, 8, and 5, and also when adjusted a suflicientdistance apart, or to different angles, to be used independently bydifferent operators.

The belt pulleys (Z driving the respective belts (Z (Z receive motionthrough separate pairs of cone gears f, f the gears f being splined tothe driving shaft f, and held in mesh with the gears f by means ofbrackets f projecting from the standards B B. The shaft 7' is adapted toreceive motion by means of a belt through tight and loose pulleys f",f".

In order to provide for the rapid and efficient surfacing of largepieces of flat or straight work I preferably provide an abrasive belt Grarranged in line with and in rear of the belts cl (P, so that while thebelts d (l are adapted to work across the grain of the work, and toeffect a rough surfacing of opposite sides thereof, the belt G willtravel substantially in line with the grain of the work, or in aslightly diagonal line over the face of the work, to effect a finer andsmoother finish of the work, which could not be effected by the use ofeither the belts d cl, or the belt G, alone.

The belt G is preferably supported upon a driving pulley g, and a seriesof idler pulleys g, g 1 The pulley g is provided with a cushioned face,and the abrasive face of the belt runs thereon. Motion is imparted tothe driving pulley g through an independent belt over the .tight andloose pulleys 5 The working sections of the belt G are supported in therear by means of adjustable supports II H, the support H being carriedupon a bracket 71., which is adapted to be adjusted to the desiredposition and clamped by a clamping nut h. The support H is carried by abracket if having a slotted opening h, through which pass two stud boltsh to hold bracket 12/- in place and allow it a limited movement endwise.A spring it presses against the end of bracket 71?, and its tension isadapted to be regulated by means of a screw rod If, to provide anautomatically yielding tension of the support H against the rear face ofthe belt G, to press the two working sections of the belt against theopposite faces of the work. Supports H, H, are adjustable for alinementas described for support E. The tension of belt Gr is attained byshifting the frame in which the pulleys g g are journaled by means ofthe screw 9 The work is supported between the supports H H by means of atable it and the frame is arranged low enough so that the work will passfrom table 71. over the top of said frame.

here it is designed to employ my improved mechanism exclusively insurfacing large pieces of straight work, a single abrasive belt K may beemployed in place of the separate belts d" d", as indicated in Fig. 2,said belt K being supported upon a driving pulley 7t and an adjustableidler pulley 7.2 with its abrasive face toward said pulleys, and theworking sections of the belt supported by supports k if, one of which isadjustable either as described for the support H or the support E.

As a modification to be used in place of the belt G, I have illustratedin Fig. 6 two independent horizontal or substantially horizontal belts LL, the working sections of which are supported by supports N N mountedand operated as described for the supports H H, said belts L L beingsupported upon driving pulleys m m and adjustable idler pulleys a a. Ifdesired the support E may be mounted and tensioned as described forsupport H.

As illustrated in Fig. 7, abrasive belts P P having adjustable supportsR R, preferably yieldingly tensioned, and corresponding to belts (Z andG of Fig. 1 are arranged to act successively upon one side only ofstraight work, the opposite side of the work being supported in contactwith the active sections of said belts by means of table or support j),relative to which said belts and their supporting frames 72, 71 areadjustable.

In practice the belt sections traveling crosswise of the grain serve torapidly abrade the surface, and to remove all inequalities, and producea uniformly plane, but not smoothly polished surface, while the beltsections traveling with or substantially with the grain of the workserve to highly polish such uniform surface, and to remove any markscaused by the previous belt sections traveling across the grain.

The mechanism herein illustrated and described is capable ofconsiderable modification without departing from the principle of myinvention.

Having described my invention, what I claim is;

1. In a mechanism of the character described. a pair of abrasive beltsections adapted to contact with the opposite faces of the work and totravel at substantially right angles to the travel of the work, supportsfor the rear faces of said belt sections opposite the work, a pair ofabrasive belt sections located in line with and in rear of said firstnamed belt sections and adapted to travel substantially in line with thetravel of the work, and supports for the rear faces of said last namedbelt sections opposite the work, and means to support the work.

2. In a mechanism of the character described, a support for the Work, anabrasive belt adapted to contact with one face of the Work, and totravel at substantially right angles to the travel of the Work, asupport for the rear face of said belt opposite the work, an abrasivebelt located in rear of said first named belt and adapted to contactwith the work and to travel substantially in line with the travel of thework, and a support for the rear face of said last named belt oppositethe work.

3. In a mechanism of the character indicated, a substantially horizontalwork support, a pair of vertically traveling abrasive elt sectionslocated at opposite sides of said work support, supports for the rearfaces of said belt sections, a pair of substantially horizontallytraveling abrasive belt sections located in rear of said first namedbelt sections and at opposite sides of said work support, and supportsfor the rear faces of said last named belt sections.

4. In a mechanism of the character described, a substantially horizontalwork support along which the work is adapted to be fed, an abrasive belthaving an active section adjustable to and from the work support, saidbelt traveling at substantially right angles to the feed of the Workupon said work support, a support for the rear face of said active beltsection, an abrasive belt located in rear of said first named belthaving an active section adjustable to and from the work support andadapted to travel substantially in line with the feed of the work, and asupport for the rear face of the active section of said last named belt.

5. In a mechanism of the character indicated, a substantially horizontalwork support, a pair of active abrasive belt sections each traveling ina substantially vertical direction and adjustable to and from each otheron opposite sides of said work support, supports for the rear faces ofsaid active sections means to hold said active belt sections yieldinglyin contact with opposite sides of the work, a pair of active abrasivebelt sections located on opposite sides of said work support, in rear ofsaid first named belt sections, each adapted to travel in asubstantially horizontal direction, supports for the rear faces of saidlast named belt sections,

travel in a substantially vertical direction,

located upon opposite sides of said table and adjustable to and fromeach other, supports for the rear faces of the active sections of saidbelts, and means adapted to yieldingly hold said active belt sections incontact with opposite sides of the Work, a pair of abrasive beltslocated in rear of said first named belts upon opposite sides of saidwork table and adapted to travel in a substantially horizontaldirection, supports for the rear faces of the active sections of saidlast named belts, and means adapted to hold said active belt sectionsyieldingly in contact with opposite faces of the work.

7. In a mechanism of the character indicated, a base provided with ways,a pair of standards adjustable to and from each other upon the ways ofsaid base, pivotally sup ported frames mounted upon said standards andadjustable to various angles relative thereto, belt driving pulleyscarried by shafts journaled within the pivotal supports of said frames,adjustable idler pulleys carried by said frames and independent abrasivebelts supported upon the pulleys of said res ective frames, said beltsbeing adapted to e used either conjointly upon a single piece of work orseparately upon different pieces of work.

8. In a mechanism of the character indicated, a base provided with ways,a driving shaft mounted in bearings carried by said base, a pair ofstandards adjustable to and from each other upon the ways of said base,and provided with bearings supporting said driving shaft, adjustableframes pivotally mounted upon said standards, belt driving pulleyscarried by shafts journaled within the pivotal supports of said frames,gears carried by said pulley shafts in mesh with and receiving motionfrom gears splined to said driving shaft, adjustable idler pulleyscarried by said frames, and independent abrasive belts sup orted uponthe pulleys of said respective rames, said belts being adapted to beused either conjointly upon a single piece of work or separately upondifferent pieces of work.

In testimony whereof I have afiixed my signature in presence of twowitnesses.

OLMEDO CORTEZ WYSONG.

Witnesses:

J. R. BROWN, 0. W. MILEs.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

